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Une solution intégrée permettant un fonctionnement à faible surchauffe pour de meilleures performances dans les systèmes à refroidisseurs réversibles.

An integrated solution enabling low superheat operation for improved performance in reversible chiller systems.

Numéro : pap. 2527

Auteurs : KRISHNA A., WINANDY E., BERTAGNOLIO S.

Résumé

The adoption and proliferation of variable speed compressors and electronic expansion valves (EXVs) in high-efficiency reversible chiller systems provides the opportunity to optimize the performance of the unit around a new set of variables. This paper details the benefits of a controls framework designed to enable low-superheat (below 5K) operation to optimize the seasonal energy efficiency ratio (SEER) of a commercial-scale chiller in a safe manner. The various attributes of low-superheat operation over conventional (>5K) chiller operation, including the necessary changes in circuit controller management and reliability of the compressor, is discussed. The performance benefit for a range of capacities and operating conditions, with particular attention to evaporator effectiveness, is also presented. Ultimately, this provides a template from which significantly improved system performance can be achieved.

Documents disponibles

Format PDF

Pages : 10

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : An integrated solution enabling low superheat operation for improved performance in reversible chiller systems.
  • Identifiant de la fiche : 30024596
  • Langues : Anglais
  • Source : 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 09/07/2018

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